Pistol chassis and firearm apparatus

Abstract

A pistol chassis is disclosed which may include a lower housing, an upper housing, a proximal enclosure, a distal sleeve, and a proximal accessory. The distal sleeve, lower housing, and upper housing may be secured together to form a tubular member for receiving a pistol. The lower housing further may include a distal segment, a proximal segment and an intermediate segment. Time distal segment may include a pistol frame receptacle and a trigger guard enclosure. The proximal accessory may be a folding stock. The pistol chassis may house a pistol to produce a firearm apparatus.

What is claimed is: 
     
       1. A pistol chassis comprising:
 a lower housing which comprises a distal end and a proximal end, the proximal end being spaced from the distal end along a first longitudinal axis, the lower housing comprises
 a distal segment comprising
 a pistol frame receptacle which comprises
 a starboard side rail and 
 a port side rail, the starboard side rail and the port side rail being configured and dimensioned to interlock with a housed pistol frame to precisely and securely position the housed pistol frame in alignment with the first longitudinal axis, and 
 
 a trigger guard enclosure which comprises
 a first wall including a first fastener receiving hole, 
 a second wall spaced from the first wall, the second wall including a second fastener receiving hole, and a third wall disposed between the first wall and the second wall, 
 
 a trigger guard seat comprising a trigger guard contact surface, a spring guide surface spaced from the trigger guard contact surface, a first side wall, a second side wall, a spring guide extending from the spring guide surface, a compression spring disposed around the spring guide, an elongated slot extending from the first side wall to the second side wall, and a trigger guard retention pin, the trigger guard retention pin being disposed in the first fastener receiving hole, the elongated slot, and the second fastener receiving hole, 
 
 a proximal segment comprising a blocking element and a track, 
 an intermediate segment situated between the distal segment and proximal segment, the intermediate segment comprising a lower opening for receiving a pistol and a starboard opening for passage of fired ammunition casings, and 
 
 a proximal enclosure connected to the proximal segment, the proximal enclosure comprising a projection, a clamping surface which is configured and dimensioned to interlock with a pistol grip dovetail, and a proximal latch for selectively locking the proximal enclosure to the intermediate segment, the proximal enclosure being telescopically received on the proximal segment, the projection being positioned in the track, and the clamping surface being disposed opposite the pistol frame receptacle. 
 
     
     
       2. The pistol chassis of  claim 1 , further comprising an upper housing. 
     
     
       3. The pistol chassis of  claim 2 , wherein the upper housing comprises a longitudinal axis, the upper housing comprising an accessory rail and a charging handle track. 
     
     
       4. The pistol chassis of  claim 3 , wherein the upper housing further comprises a charging handle assembly positioned in the charging handle track. 
     
     
       5. The pistol chassis of  claim 4 , wherein the charging handle assembly comprises a handle and a rail. 
     
     
       6. The pistol chassis of  claim 5 , wherein the rail comprises a slide bracket. 
     
     
       7. The pistol chassis of  claim 6 , wherein the rail comprises an elongated aperture. 
     
     
       8. The pistol chassis of  claim 7 , wherein the charging handle assembly further comprises a charging handle retention pin, the accessory rail further comprises a retention pin opening, and the charging handle retention pin is disposed in the retention pin opening and the elongated aperture. 
     
     
       9. The pistol chassis of  claim 2 , further comprising a distal sleeve. 
     
     
       10. The pistol chassis of  claim 9 , wherein the distal sleeve, lower housing, and upper housing are secured together to form a tubular member for receiving a pistol. 
     
     
       11. The pistol chassis of  claim 1 , further comprising a proximal accessory connected to the proximal enclosure. 
     
     
       12. The pistol chassis of  claim 11 , wherein the proximal accessory comprises a butt stock. 
     
     
       13. The pistol chassis of  claim 12 , wherein the proximal accessory comprises a folding stock. 
     
     
       14. The pistol chassis of  claim 11 , wherein the proximal accessory comprises an arm stabilizing device. 
     
     
       15. The pistol chassis of  claim 14 , wherein the proximal accessory comprises an arm support. 
     
     
       16. The pistol chassis of  claim 15 , wherein the arm support and the pistol chassis form a hinge, and the arm support is selectively movable about the hinge. 
     
     
       17. The pistol chassis of  claim 1 , wherein the starboard side rail comprises a segment that is aligned parallel to the first longitudinal axis and an angled segment which includes a face that is oblique to the first longitudinal axis. 
     
     
       18. A firearm apparatus comprising:
 a pistol chassis of  claim 1 , and 
 a pistol disposed in the lower housing, the pistol contacting the trigger guard seat and the clamping surface. 
 
     
     
       19. A pistol chassis comprising:
 a lower housing which comprises a distal end and a proximal end, the lower housing comprises
 a distal segment comprising
 a pistol frame receptacle, and 
 a trigger guard enclosure, the trigger guard enclosure comprises
 a first wall including a first fastener receiving hole, 
 a second wall spaced from the first wall, the second wall including a second fastener receiving hole, and a third wall disposed between the first wall and the second wall, 
 
 a trigger guard seat comprising a trigger guard contact surface, a spring guide surface spaced from the trigger guard contact surface, a first side wall, a second side wall, a spring guide extending from the spring guide surface, a compression spring disposed around the spring guide, an elongated slot extending from the first side wall to the second side wall, a trigger guard retention pin, the trigger guard retention pin being disposed in the first fastener receiving hole, the elongated slot, and the second fastener receiving hole, 
 
 a proximal segment comprising a blocking element and a track, 
 an intermediate segment situated between the distal segment and proximal segment, the intermediate segment comprising a lower opening for receiving a pistol and a starboard opening for passage of fired ammunition casings, 
 
 a proximal enclosure connected to the proximal segment, the proximal enclosure comprising a projection, a clamping surface which is configured and dimensioned to interlock with a pistol grip dovetail, and a proximal latch for selectively locking the proximal enclosure to the intermediate segment, the proximal enclosure being telescopically received on the proximal segment, the projection being positioned in the track, and the clamping surface being disposed opposite the pistol frame receptacle, and 
 an upper housing comprising
 an accessory rail which comprises a retention pin opening, and 
 a charging handle track, and 
 
 a charging handle assembly positioned in the charging handle track, the charging handle assembly comprising a handle, a rail which comprises a slide bracket and an elongated aperture, and a charging handle retention pin, the charging handle retention pin being disposed in the retention pin opening and the elongated aperture. 
 
     
     
       20. The pistol chassis of  claim 19 , further comprising a butt stock connected to the proximal enclosure.